/Engine/Source/Developer/TreeMap/Public/STreeMap.h
Called when the user commits a rename change
void RenamingNode_OnTextCommitted ( const [FText](API\Runtime\Core\Internationalization\FText) & NewText, [ETextCommit::Type](API\Runtime\SlateCore\Types\ETextCommit__Type), [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [FTreeMapNodeData](API\Developer\TreeMap\FTreeMapNodeData) > NodeToRename )